<?php
$constraint_type=$_GET['constraintType'];
$parameters=$_SERVER['QUERY_STRING'] ;
switch ($constraint_type){
	case 'pk':
	case 'u':
		$url='pkunique.php';
	break;
	case 'fk':
		$url='fk.php';
	break;
	case 'c':
		$url='check.php';
	break;
}
$url.="?".$parameters;
header("Location: $url");
?>